Method for manufacturing shaped steel the cross-sectional shape of which changes in the longitudinal direction, and roll forming device
US9452459B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2012 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Sep 24, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B1/095
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roll forming device, for roll forming for the purpose of manufacturing shaped steel the cross-sectional shape of which varies in the longitudinal direction, is equipped with: first die rolls having an annular ridge part the cross-sectional shape of which varies in the circumferential direction; second die rolls having an annular groove part the cross-sectional shape of which varies in the circumferential direction; and a drive device for the first die rolls and the second die rolls. A gap is provided at the side surfaces of the annular ridge part of the first die rolls, across the entire circumference in the circumferential direction, such that the gap with respect to the side surfaces of the annual groove parts of the second die rolls widens inward in the radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.